NZ226423A - Device for separating components of a liquid having higher and lower specific gravities - Google Patents

Device for separating components of a liquid having higher and lower specific gravities

Info

Publication number
NZ226423A
NZ226423A NZ226423A NZ22642388A NZ226423A NZ 226423 A NZ226423 A NZ 226423A NZ 226423 A NZ226423 A NZ 226423A NZ 22642388 A NZ22642388 A NZ 22642388A NZ 226423 A NZ226423 A NZ 226423A
Authority
NZ
New Zealand
Prior art keywords
lower specific
liquid
sample
specific gravity
components
Prior art date
Application number
NZ226423A
Inventor
J A Burns
Original Assignee
Becton Dickinson Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Becton Dickinson Co filed Critical Becton Dickinson Co
Publication of NZ226423A publication Critical patent/NZ226423A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/14—Devices for taking samples of blood ; Measuring characteristics of blood in vivo, e.g. gas concentration within the blood, pH-value of blood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5021—Test tubes specially adapted for centrifugation purposes
    • B01L3/50215—Test tubes specially adapted for centrifugation purposes using a float to separate phases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood
    • G01N33/491—Blood by separating the blood components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/06—Valves, specific forms thereof
    • B01L2400/0633—Valves, specific forms thereof with moving parts

Abstract

A device is provided for separating the components of a liquid sample by centrifugation by dividing that portion of the sample having a higher specific gravity from that portion having a lower specific gravity, by utilizing a dual component assembly arranged to move in an evacuated container into the area adjacent the two portions of the sample under centrifugal force. The assembly includes a substantially rigid core component which nests within a cup-shaped elastomeric component, and which components interact with each other to provide alternating dual seals and open flow paths in response to different pressure differentials on each side thereof.
NZ226423A 1987-10-08 1988-10-03 Device for separating components of a liquid having higher and lower specific gravities NZ226423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/106,092 US4818386A (en) 1987-10-08 1987-10-08 Device for separating the components of a liquid sample having higher and lower specific gravities

Publications (1)

Publication Number Publication Date
NZ226423A true NZ226423A (en) 1989-12-21

Family

ID=22309441

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ226423A NZ226423A (en) 1987-10-08 1988-10-03 Device for separating components of a liquid having higher and lower specific gravities

Country Status (13)

Country Link
US (1) US4818386A (en)
EP (1) EP0311011B1 (en)
JP (1) JPH0670627B2 (en)
KR (1) KR900006418B1 (en)
AT (1) ATE91022T1 (en)
AU (1) AU604207B2 (en)
BR (1) BR8805155A (en)
CA (1) CA1319659C (en)
DE (1) DE3882000T2 (en)
DK (1) DK171289B1 (en)
MX (1) MX165560B (en)
NZ (1) NZ226423A (en)
ZA (1) ZA887496B (en)

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Also Published As

Publication number Publication date
KR900006418B1 (en) 1990-08-31
ZA887496B (en) 1989-07-26
JPH01295164A (en) 1989-11-28
DE3882000T2 (en) 1993-12-23
AU2342988A (en) 1989-04-13
ATE91022T1 (en) 1993-07-15
DK563688D0 (en) 1988-10-07
EP0311011A3 (en) 1990-05-23
BR8805155A (en) 1989-05-16
DK563688A (en) 1989-04-09
AU604207B2 (en) 1990-12-06
CA1319659C (en) 1993-06-29
DE3882000D1 (en) 1993-07-29
JPH0670627B2 (en) 1994-09-07
EP0311011B1 (en) 1993-06-23
US4818386A (en) 1989-04-04
MX165560B (en) 1992-11-23
DK171289B1 (en) 1996-08-26
EP0311011A2 (en) 1989-04-12
KR890006202A (en) 1989-06-12

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